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Finding the Fourth Proportional to 495.21, 744.27 and 238.89

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Solution

The fourth proportional to 495.21, 744.27 and 238.89 is: 359.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.21 : 744.27 = 238.89 : x
  2. Step 2: Convert to fraction form
    495.21/744.27 = 238.89/x
  3. Step 3: Cross multiply
    495.21x = 744.27 × 238.89
  4. Step 4: Simplify right side
    495.21x = 177,798.66
  5. Step 5: Solve for x
    x = 177,798.66/495.21
  6. Step 6: Final answer
    x = 359.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.